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    ACCESSION NUMBER:		0000089439-21-000061
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		15
    CONFORMED PERIOD OF REPORT:	20211019
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20211019
    DATE AS OF CHANGE:		20211019

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MUELLER INDUSTRIES INC
    		CENTRAL INDEX KEY:			0000089439
    		STANDARD INDUSTRIAL CLASSIFICATION:	ROLLING DRAWING & EXTRUDING OF NONFERROUS METALS [3350]
    		IRS NUMBER:				250790410
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1225

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-06770
    		FILM NUMBER:		211331097

    	BUSINESS ADDRESS:
    		STREET 1:		SUITE 100
    		STREET 2:		150 SCHILLING BOULEVARD
    		CITY:			COLLIERVILLE
    		STATE:			TN
    		ZIP:			38017
    		BUSINESS PHONE:		(901)753-3200

    	MAIL ADDRESS:
    		STREET 1:		SUITE 100
    		STREET 2:		150 SCHILLING BOULEVARD
    		CITY:			COLLIERVILLE
    		STATE:			TN
    		ZIP:			38017

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	SHARON STEEL CORP
    		DATE OF NAME CHANGE:	19910103
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    <SEQUENCE>1
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    Document 1 - file: mli-20211019.htm

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    <FILENAME>exhibit991q32021earningsre.htm
    <DESCRIPTION>EX-99.1
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    <FILENAME>mli-20211019.xsd
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    <TYPE>EXCEL
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    <TYPE>JSON
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